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Flight Reliability

F9 1918 · Frontier Airlines

Denver → Cleveland (DEN–CLE)

86
Pretty Reliable
WanderNerd Reliability Score
86%
Arrive within 15 minutes
0 min
Average arrival delay
1.2%
Cancelled
9 min early
Median arrival delay

Based on 252 historical flights. Data through May 2026.

What the data says

Morning-you made the right choice.

F9 1918 departing between 6–9 AM arrived on time 90% of the time, versus 74% between 3–6 PM.

Mondays have been rough.

F9 1918 arrived on time 93% of the time on Saturdays and just 77% on Mondays. That gap is worth planning around.

Better than the DEN–CLE route average.

F9 1918 arrived on time 86% of the time, versus 76% across the DEN–CLE route.

Better than the Frontier Airlines network average.

F9 1918 arrived on time 86% of the time, versus 73% across the Frontier Airlines network.

The breakdown

On-time by weekday
  • Mon77%(34 flights)
  • Tue92%(36 flights)
  • Wed86%(21 flights)
  • Thu88%(42 flights)
  • Fri86%(36 flights)
  • Sat93%(30 flights)
  • Sun81%(48 flights)
On-time by departure window
  • 6–9 AM90%(127 flights)
  • 9 AM–12 PM87%(15 flights)
  • 12–3 PM82%(85 flights)
  • 3–6 PM74%(19 flights)
  • 6–9 PM—(1 flights)
On-time trend by month
93%
May

Jun 85% → May 93% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202585%27
July 202587%30
August 202571%28
September 202590%19
November 202593%15
December 202583%23
January 2026100%18
February 202672%18
March 202689%18
April 202693%15
May 202693%29
Departures on time
86%
Diverted
0.8%
Flights flown
247
Months covered
12

Same route, other flights

Keep nerding

Based on 252 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.